Endoscope or other optical instrument.



. PATENTED FEB. Il, 1908. R. H. WAPPLER.

ENDOSGOPE OR OTHER OPTICAL INSTRUMENT.

APPLICATION FILED MAY 13. 1907.

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Fig. 4 is an elevation of the end of a cystolin endoscopes or other optical instrument -other similar electro-surgical instruments vgranted to me July 25, 1905, for an improve- REINHOLD H. WAPPLER, OF NEW YORK, N. Y.

ENDOSCOPE OR OTHER OPTICAL INSTRUMENT.

Specification of Letters Patent.

Patented Feb. 11, 1908.

Application led May 13. 1907. Serial No. 373471.

To all whom it may concern:

Be it known that I, REINHOLD H. WAP- PLER, a citizen of the United States, residing at the boroughof Manhattan, city, county, and State of New York, have invented an Improvement in Endoscopes or other Optical Instruments, of which the following is a specification.

My invention relates to an improvement particularly adapted for use in connection with cystoscopes, such for instance as shown and described in my co-pending application Serial No. 364,306, filed March 25, 1907, or

employed in examination for and detection of diseases of a gastric or urinary nature, and my present invention is particularly an improvement upon the device shown and described in Letters Patent No. 795,567,

ment in endoscopes or other optical instruments, with the special object of so constructing the extremity of the telescopic tube and the setting of the lens therein as to obtain'a more forward vision than so far as I am aware, has heretofore been obtained.

In carrying out my present invention, I prefer to employ a telescopic tube, fitted at one end with an eye-piece, together with the necessary lenses for magnifying and carrying the image, and provided at the other end with an end-piece fitted with a plano-convex lens set therein in such a position as to obtain a forward vision; the said end-piece being connected to the telescopic tube by a coupling member' in which an objective glass 'is set, all of which will be hereinafter more particularly described.

In the drawing, Figure 1 is an elevation of my improved endoscope, Fig. 2 is a sectional elevation of the end of the same. Fig. 3 is a plan of the parts shown in Fig. 2 and scope showing the relative positions of the same and the end of the endoscope when placed therein for use.

Referring particularly to the drawing, a. designates a telescopic tube provided at one extremity with a head piece b and an eyepiece c and at the other extremity with an end-piece d.

Within the tube and in suitable positions therein between the eye-piece c and the endpiiece d, I may employ short tubes 10, 12,

tted respectively with the intermediate lenses 11 and 13, employed as will be understood, to magnify and carry the image. These short tubes 10 and 12 and their respective lenses 11 and 13 may be placed, as it will also be understood, in any required position within the telescopic tube a;

The end piece d is provided at its extremity and in the portion of the cylindrical wall adjacent thereto with an opening 14.

e representsa base or lens support set at an inclination within the end-piece dupon a suitable foundation f of resinous cement or other material and resting upon this support e and iitted within the end-piece d and extending partially through the opening 14, I employ a plano-convex lens g. As shown, this lens g is set at such an acute inclination with the axis of the end-piece d, which is coincident with the axis of the telescopic tube, and being placed at the extremity of `the end-piece and consequently of the telescopic tube, that the maximum forward vision may be obtained.

It is to be noted that the end-piece-d is of the same exterior and interior diameters as the telescopic tube a, and I prefer to employa coupling member 7L exteriorly screw-threaded and provided with a tapered end 15 adapted to screw into the screw-threaded interior of the end-piece d in such a position that the tapered end 15 of the coupling member h contacts with and bears against a portion of the plano-convex lens g, thereby maintaining the same in position upon the backing or support member e. At the other end thereof the coupling member h is provided with an objective glassil and this end of the coupling member is adapted to screw into the screwthreaded interior of the end of the telescopic tube a, whereby the end-piece d is connected to the telescopic tube a.

Referring particularly to Fig. 4, l represents a sheath of the cystoscope or other similar electro-surgical instrument, provided as set forth in my co-pending application, to which reference has hereinbefore been made, with an off-set end indicated at 16; this Oifset end being provided on opposite sides with cut-awayportions 17 18 respectively, and iitted with a globe 19 adapted to receive an electric light bulb. In this figure the extremity of theendoscope is shown in dotted lines in position within the sheath l of the cystoscope, wherein as will be apparent, the light from the electric light bulb will be thrown on the parts forward of the instrument and by means of the peculiar construction hereinbefore described of the extremity of the endoscope a vision of these parts may be obtained.

I claim as my invention:

1. An optical instrument comprising a tube, lenses therein, an end-piece, a lens set in the extremity of the said end-piece and means Within the end-piece 'for securing the said lens in position and connecting the said end-piece to the extremity of the said telescopic tube.

2. An optical instrument comprising a tube, lenses therein, an end-piece, a lens set in the extremity of the said end-piece, means Within the endpiece for securing the said lens in position and connecting the said end-piece to the extremity of the said telescopic tube and an objective glass set in the said means adjacent to the said lens.

3. An optical instrument con'iprising a tube, lenses therein, an end-piece provided With an opening in the extremity and the adjacent portion thereof, a lens support set at an acute angle to'the longitudinal axis of the said end-piece, a plano-convex lens sety on the said support and Within the said opening at the extremity of the end piece and means Within the said end-piece Vfor connecting the same to the extremity of the said tube.

4. An optical instrumentl comprising a tube, lenses therein, an end-piece provided with an opening` in the extremity and the adjacent portion thereof, a lens support set at an acute angle to the longitudinal axis of the said end-piece, a plano-convex lens set on the said support, means Within the said endpiece for connecting the same to the extremity of the said tube and an objective glass set in the said means adjacent to the said lens.

5. An optical j instrument comprising a tube, lenses therein, an end-piece provided With an opening in the extremity and adjacent portion thereof, a lens support set at an acute angle to the longitudinal axis of the said end-piece, a plano-convex lens set on the said support and extending into the said opening and a coupling iitting into the said end-piece and adapted to connect the same to the extremity of the said tube.

6. An optical instrument comprising a tube, lenses therein, an end-piece provided with an opening in the extremity and adjacent portion thereof, a lens support set at an acute angle to the longitudinal axis o l' the said end-piece, a plano-convex lens set on the said support and extending into the said opening and a coupling Vfitting into the said end-piece and having a conical endv adapted to bear against a portion of the surface of the said lens, the said coupling being adapted to connect the said end-piece to the extre1nit\Y of the said tube.

7. An optical instrument comprising a tube, lenses therein, an end-piece provii'led with an opening in the extren'iity and ad jacent portion thereof, a lens support set at an acute angle to the longitudinal axis of the said end-piece, a jiilaim-coiivex lens set on the said support and extending into the said opening and a coupling fitting into the said end-piece and having a conical end adapted to bear against a portieri of the surface of the said lens, the said coupling being adapted to connect the said end-piece to the extremitv of the said tube and an objective glass set in the said coupling.

Signed by me this 7th day of hlay, 1,907.

REINHOL'I) ll. `W./\PPLER.

Witnesses:

A. H. SERRELL, BERTIN. M. ALLEN. 

